inetdev_valid_mtu 1540 net/ipv4/devinet.c if (inetdev_valid_mtu(dev->mtu)) inetdev_valid_mtu 1552 net/ipv4/devinet.c if (!inetdev_valid_mtu(dev->mtu)) inetdev_valid_mtu 1594 net/ipv4/devinet.c if (inetdev_valid_mtu(dev->mtu)) inetdev_valid_mtu 1264 net/ipv4/ip_output.c if (!inetdev_valid_mtu(cork->fragsize))